3a thread class right-hand 0.252" thread length double hexagon extended washer head style 32 thread quantity per inch silver threads surface treated unjf thread series
2a thread class right-hand 0.250" thread length pan head style 20 thread quantity per inch passivate screw surface treated head painted lusterless olive drab color no. 34087 in accordance with fed-std-595 unc thread series
Used on aircraft, eagle f-15. 3a thread class right-hand 0.574" thread length flat countersunk head style 20 thread quantity per inch passivate surface treated unjf thread series
2a thread class right-hand 0.710" thread length distorted head head style 0.100" grip length 20 thread quantity per inch phosphate zinc surface treated unc thread series
2a thread class right-hand 1.728" thread length flat countersunk head style 20 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 1.066" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.320" thread length hexagon head style 40 thread quantity per inch navy special project cadmium screw surface treated unc thread series
3a thread class right-hand 0.955" thread length hexagon head style 0.070" hole diameter 28 thread quantity per inch passivate surface treated unjf thread series